There’s an old adage that when it comes to boats with teak decks, there are only two types of owners: those who have leaks and those who have them but don’t know it. Newer methods of bonding teak deck overlays in modern construction using fitting epoxies or other such products substantially reduces the need for screws (and the potential leaks associated with them); however, for boat owners with traditional decks or decks with mechanically fastened teak overlays, the quest remains the same: Find a seam caulk that’s durable, easy to apply, bonds tenaciously to teak, remains flexible, and is resistant to both UV light and chemicals such as cleaners, oils,…